aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/pasemi/iommu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/platforms/pasemi/iommu.c')
-rw-r--r--arch/powerpc/platforms/pasemi/iommu.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pasemi/iommu.c b/arch/powerpc/platforms/pasemi/iommu.c
index 309d9ccccd50..c61667e8bb06 100644
--- a/arch/powerpc/platforms/pasemi/iommu.c
+++ b/arch/powerpc/platforms/pasemi/iommu.c
@@ -187,6 +187,11 @@ static void pci_dma_dev_setup_pasemi(struct pci_dev *dev)
if (dev->vendor == 0x1959 && dev->device == 0xa007 &&
!firmware_has_feature(FW_FEATURE_LPAR)) {
dev->dev.archdata.dma_ops = &dma_direct_ops;
+ /*
+ * Set the coherent DMA mask to prevent the iommu
+ * being used unnecessarily
+ */
+ dev->dev.coherent_dma_mask = DMA_BIT_MASK(44);
return;
}
#endif